angular-cn/dev-infra/utils/git/github-yargs.ts
Paul Gschwendtner 67f65a9d25 refactor(dev-infra): improve type-safety of git client utility (#42468)
Currently the `GitClient` accepts a generic parameter for determining
whether the `githubToken` should be set or not. This worked fine so far
in terms of distinguishing between an authenticated and
non-authenticated git client instance, but if we intend to conditionally
show methods only for authenticated instances, the generic parameter
is not suitable.

This commit splits up the `GitClient` into two classes. One for
the base logic without any authorization, and a second class that
extends the base logic with authentication logic. i.e. the
`AuthenticatedGitClient`. This allows us to have specific methods only
for the authenticated instance. e.g.

  * `hasOauthScopes` has been moved to only exist for authenticated
    instances.
  * the GraphQL functionality within `gitClient.github` is not
    accessible for non-authenticated instances. GraphQL API requires
    authentication as per Github.

The initial motiviation for this was that we want to throw if
`hasOAuthScopes` is called without the Octokit instance having
a token configured. This should help avoiding issues as within
3b434ed94d
that prevented the caretaker process momentarily.

Additionally, the Git client has moved from `index.ts` to
`git-client.ts` for better discoverability in the codebase.

PR Close #42468
2021-06-03 14:34:33 -07:00

45 lines
1.8 KiB
TypeScript

/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import {Argv} from 'yargs';
import {error, red, yellow} from '../console';
import {AuthenticatedGitClient} from './authenticated-git-client';
import {GITHUB_TOKEN_GENERATE_URL} from './github-urls';
export type ArgvWithGithubToken = Argv<{githubToken: string}>;
/** Sets up the `github-token` command option for the given Yargs instance. */
export function addGithubTokenOption(yargs: Argv): ArgvWithGithubToken {
return yargs
// 'github-token' is casted to 'githubToken' to properly set up typings to reflect the key in
// the Argv object being camelCase rather than kebab case due to the `camel-case-expansion`
// config: https://github.com/yargs/yargs-parser#camel-case-expansion
.option('github-token' as 'githubToken', {
type: 'string',
description: 'Github token. If not set, token is retrieved from the environment variables.',
coerce: (token: string) => {
const githubToken = token || process.env.GITHUB_TOKEN || process.env.TOKEN;
if (!githubToken) {
error(red('No Github token set. Please set the `GITHUB_TOKEN` environment variable.'));
error(red('Alternatively, pass the `--github-token` command line flag.'));
error(yellow(`You can generate a token here: ${GITHUB_TOKEN_GENERATE_URL}`));
process.exit(1);
}
try {
AuthenticatedGitClient.get();
} catch {
AuthenticatedGitClient.configure(githubToken);
}
return githubToken;
},
})
.default('github-token' as 'githubToken', '', '<LOCAL TOKEN>');
}